Electric welding-machine



LSAGS.

IVI. F. HILL.

ELECTRIC WELDING MACHINE. APPLICATION FILED MAY 2. 19H3'-v Patented Feb. 10,1920.

2 sHEET-SHEEVI.

wveM/Ioz M. F. HILL.

ELECTRIC WELIDING MACHINE.

APPLICATION FILED MAIZ. I9Is.

1,330,468o Ptented Feb. -l .20.

2 SHEETS-SH Im 5. f HE- 4- @l @nvm/Ifo@ .SHOM/Iz l MYRON F. HILL, F NEW YORK, N. Y.

ELECTRIC WELIIIlING-MACHINE.

Specication of Letters Patent. j Patented Feb. 10, 1920.

Application led May 2, 1918. Serial No. 232,032.

To-aZZ whom it may4 concern.:

Be it known that I, MYRON FRANCIS HILL,

` a citizen of the United States, residing at New York city, county and State of New York, have invented certain new and useful Improvements in Electric Welding- Machines, of which the followingis a specification.

My invention relates to welding, and particularly to welding unions to a plurality of parts to be welded 'together simultaneously. t

These unions, preferably formed previous V'to the welding operation, are fitted to the joints, heated and caused to adhere to the parts to be joined together. They.may be;` -of any desirable length and appliedapfart or close together, or joined end to end by welding.

The current may be producedV as usual and with transformers, one applied to each jaw if desired. When two jaws' are used one may be of one polarity and the other the other polarity.

If three are used, one may be of one polarity and one of the opposite polarity.

If four jaws are used, one, may be of one polarity and the others of the opposite polarity, but preferably either two adjacent or two diagonally opposite jaws are of one polarity and the others of the opposite polarity.

Any suitable combination of the jaws,

levers and transformers may be employed,

similar to systems -well known in the art.

In the drawings i Figure 1 is a view of a welded joint.

Fig. 2 is a plan View ofthe same.

Fig. 3 is an elevation of the welding machine with onelever removed. Fig. 4 is an end view of the welding machine.

Fig. 5 is a modification.

In Fig. 1 are shown plates 6, divided sometimes at 6, and two plates 7 and 8, to to be joined' together. Separate unions 9 are welded into the joints each adhering simultaneously to a plurality of plates, in this case two.

In Fig. 2 are shown four such unions and the location of the welding jaw electrodes (l lwhen about to apply current and pressure. The jaws and unions may be so proportioned in size that the jaws converge upon the plates until stopped by them, this action pressing thev heated unions so that they adhere to the plates, preferably all at once.

Fig. Sshows thewmechanical diagram of the welding machine, the transformer cifrcuits in practice, rbeing applied thereto in the usual way, two levers forming one circuit and two forming another circuit.

,The jaws 10 are formed on levers 11.

pivoted at 12 between lugs- 13, and insulated at 14, with, a generous surface capable of withstanding the. necessary compression pressure. f

The other ends ofthe levers have riding surfaces 15 adapted to be engaged by the cam 16 to apply pressure tothe levers to close the jaws 10 toward' each other. An

yelectrical connection 17. may complete the circuit of two levers and the cam 16 may assist. y j v The cam forms part of a piston working in 'the cylinder 18 secured to the vtension bar 18EL by nuts 19.` The piston may be operated by air pressure to exert a hammer blow, or by hydraulic means to exert a slow but powerful pressure. The pipe 20 may be utilized to introduce the pressure to the cylinder chamber.

Suspension members 21 and 22 may be formed on the cylinder 17 and lugs 13, with which to handle the machine with a crane so that it may work in a horizontal or vertica-l position.

j ing them by apowerful joint.

What I claim is:

1.A welding machine having pressure and electricvywelding jaw electrodes adapted to simultaneously weld separate metal unions to a plurality of parts to-be'joined together.

2. The combination claimed in claim 1 having four jaws adapted to form eight welds at once.

3. The combination claimed inv claim 1 ranged in two planes at angles t0 each having said jaws adapted to form two welds other, and unions to weld sa1d plates to- 10 with one jaw. l gether adapted to receive the pressure of 4. A weld between plates set at an angle said jaws, said jaws arranged to press to- 5 comprising a triangular' shaped union ward each other.

Welded into said angle to both plates. In testimony whereof I have aixed my 5. A welding machine having Contact and signature to this specification. pressure jaws to weld together plates ar- MYRONF., HILL. 

